i dont beleive you can legally quad there, and there isnt really anywhere to for that matter, the lake borders farmers feilds from all directions. I know snowmobiling is allowed there but they are running on creek beds, and the lake most of the winter. Not positve on this info though, so another may have to clarify.
Sounds good i wont waste me time driving there, looks like Rocky is the closest to me in Ponoka, i usually just go to Outwest RV. I was thinking of going to Medicine Lake before i was told it was just all muskeg and mud, i dont know want to beat the heck out of my machine there.
medicine lake has alot of muskeg true, but there are some trails there that arent so bad, and there are always ways around the skeg, hell my kid drives a trx 250x 2 wheel drive and he keeps up to us bad azzes driving xmrs, and and stuff, give it a try you may like, it, alder flats is also close by but i think there is a pile of mud there right now. Hope this helps ya out